Once upon a time, I had a backyard full of blackberries:
They were wound tightly around thousands of salmonberry plants, and the vines were as thick as my thumb. They had HUGE thorns that were viciously sharp.
My usual nitrile gloves were useless against the thorns, and I despaired as to what I would do with these blackberries. And then, at my local hardware store, I found these:
They’re Wells Lamont cowhide gloves with a padded palm and they’re the toughest gloves I’ve ever come across. I could grab a monster blackberry vine and pull, and only one thorn in a hundred could make it through that leather.
So, if you’re clearing blackberries and looking for a glove that’ll stand up to the thorns, buy yourself a pair of these.